Ferrea Competition Plus Exhaust Valve Kit 31.5mm +1mm - BMW / M50 / M51 / M52 / M54 / S50

Ferrea Competition Plus Exhaust Valve Kit 31.5mm +1mm - BMW / M50 / M51 / M52 / M54 / S50Actual part may differ from image above. M50 M54 & S50 engines contain 24 valves 12 intake and 12 exhaust this Set contains 12 +1mm oversized exhaust valves. Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8 Z18, which provides high tensile strength. An exclusive two step slow forging process ensures proper

Actual part may differ from image above. 


M50-M54 & S50 engines contain 24 valves - 12 intake and 12 exhaust this Set contains 12 +1mm oversized exhaust valves.


Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to the material structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.


- Valve Tip Length 3.7mm
- Stem Diameter 5.96mm
- Valve Length 106mm
- Valve Head Size 0.040" / 1mm
- Valve Head Diameter 31.5mm
- Valve Type Exhaust
- Valve Stem Diameter 5.96mm
- Valve Material Stainless Steel, Super Alloy
- Valve Face Dish



Replaces OEM Part #  11-34-1-739-823 / 11 34 1 739 823 / 11341739823